Author Topic: Little Ms. Pac-Man, A Portable Cocktail Cab (Read 107220 times)

OpFlash · « **Reply #240 on:** January 19, 2013, 01:10:47 am »

I used to be into photoshop awile back and just let me skills go Ive completely forgotten how to use the program. Wish i wouldve kept with it as now im really into arcades again and couldve used it with designing artwork. Its something that Im interested in still just gotta get the time to relearn the software.

monkeychunkuk · « **Reply #241 on:** January 19, 2013, 07:09:49 am »

This machine is amazing! Great work
Where did you get the board to run the games?

And whats next???

griffindodd · « **Reply #242 on:** January 19, 2013, 08:42:53 am »

Quote from: monkeychunkuk on January 19, 2013, 07:09:49 am

This machine is amazing! Great work
Where did you get the board to run the games?

And whats next???

Google Jamma boards

Nephasth · « **Reply #243 on:** January 19, 2013, 09:27:49 am »

Quote from: griffindodd on January 19, 2013, 08:42:53 am

Quote from: monkeychunkuk on January 19, 2013, 07:09:49 am
Where did you get the board to run the games?

Google Jamma boards

It's a 60-in-1 board. Can be had through many arcade parts vendors.

SpaceHedgehog · « **Reply #244 on:** January 19, 2013, 09:35:10 am »

Fantastic build. SLG with that monitor looks like quite a combo.

griffindodd · « **Reply #245 on:** January 27, 2013, 03:32:38 pm »

Hi all. Finally I am getting some time to finish the base and call this thing complete.

Laminated the base and made countersunk holes for the test and service switches

Black them up with a good old sharpy and drop in the buttons.

Attach the plate that Corybee made for me, I love these things. Thanks Cory!

Sent from my pocket ZX81

Slig · « **Reply #246 on:** January 27, 2013, 03:45:02 pm »

Dang man that is so sharp looking, amazing work!

griffindodd · « **Reply #247 on:** January 27, 2013, 03:57:52 pm »

Thanks Slig. Still working away here.

Carry handles in place. Thanks Scott PL1 for the tip on these.

Sent from my pocket ZX81

griffindodd · « **Reply #248 on:** January 27, 2013, 04:32:41 pm »

Not happy that I have to channel the edges this thin but the large fans and speakers come so close to the panel I have no chouce. Such is the way of a prototype build though.

Sent from my pocket ZX81

griffindodd · « **Reply #249 on:** January 27, 2013, 04:55:31 pm »

Don't know what I was thinking on that last cut. I should have done this the first time..

Time to go back and patch that other side with some glue and scrap

Sent from my pocket ZX81

griffindodd · « **Reply #250 on:** January 27, 2013, 05:12:20 pm »

Patch it up soldier and move along

Sent from my pocket ZX81

griffindodd · « **Reply #251 on:** January 27, 2013, 05:25:14 pm »

Decided to add a volume control to the P1 CP. A little nervous drilling through a finished panel but it came out OK

Sent from my pocket ZX81

DaOld Man · « **Reply #252 on:** January 27, 2013, 05:43:26 pm »

Good jorb Griff!!!

griffindodd · « **Reply #253 on:** January 27, 2013, 06:59:38 pm »

Thanks DaOld.

Here we go, far more carryabler...

Looks like I am going to have to leave it here for now. I bought a 5k pot for the volume after hunting around forums trying to work out what best to use for an icade. Unfortunately this is too strong so I'm going to have to get another.

Sent from my pocket ZX81

Jigenjuke · « **Reply #254 on:** January 27, 2013, 07:01:05 pm »

Quote from: DaOld Man on January 27, 2013, 05:43:26 pm

Good jorb Griff!!!

What he said! As always sir, Awesome job!

Jigenjuke

DaOld Man · « **Reply #255 on:** January 27, 2013, 07:49:28 pm »

Ok, for those of us who do not understand my "Good jorb Griff" statement, please refer to homestarrunner.com

Jigenjuke · « **Reply #256 on:** January 27, 2013, 09:12:04 pm »

Quote from: DaOld Man on January 27, 2013, 07:49:28 pm

Ok, for those of us who do not understand my "Good jorb Griff" statement, please refer to homestarrunner.com

Hmmm sorry 'bout that just quickly scanned it and thought there was no "r" in the "jorb", but thanks DaOldMan

Interesting site.

Jigenjuke

griffindodd · « **Reply #257 on:** January 27, 2013, 10:56:44 pm »

Quote from: DaOld Man on January 27, 2013, 07:49:28 pm

Ok, for those of us who do not understand my "Good jorb Griff" statement, please refer to homestarrunner.com

Ye did a greeatt Jeeeeeoooorb there Hamtsray.............Ramrod.....Homestar, GREAT JJEEEEEEEEOOOOOORB

griffindodd · « **Reply #258 on:** January 28, 2013, 09:52:55 am »

Quick question on the POT. This 5k one is too strong for the volume signal from the Jamma board, it takes the volume from 100% to 0% in barely and eighth of a turn, so I need something with less resistance. As I know nothing about this stuff, do I then need a 1k pot for it to be 5 times less resistance or do I need a 25k pot?

chopperthedog · « **Reply #259 on:** January 28, 2013, 10:16:28 am »

Is the signal coming from the board line level? If so, any Radio Shack audio taper 100k pot will be fine.

This is the one I use on all my cabs between computer and speaker amp. http://www.radioshack.com/product/index.jsp?productId=2062359

good day.

griffindodd · « **Reply #260 on:** January 28, 2013, 11:43:11 am »

Thanks for that info. So a 100k is less resistive then a 5k? The line does come from the iCade board but I believe it has it's own little amplifier, the booklet that came with it certainly didn't have much in the way of specs.

Le Chuck · « **Reply #261 on:** January 28, 2013, 06:46:11 pm »

Quote from: griffindodd on January 28, 2013, 09:52:55 am

Quick question on the POT. This 5k one is too strong for the volume signal from the Jamma board, it takes the volume from 100% to 0% in barely and eighth of a turn, so I need something with less resistance. As I know nothing about this stuff, do I then need a 1k pot for it to be 5 times less resistance or do I need a 25k pot?

Are you using a log pot or a regular? For volume you usually need to use a logarithmic pot or else you'll get those huge jumps in volume.

griffindodd · « **Reply #262 on:** January 28, 2013, 06:54:44 pm »

Quote from: Le Chuck on January 28, 2013, 06:46:11 pm

Are you using a log pot or a regular? For volume you usually need to use a logarithmic pot or else you'll get those huge jumps in volume.

The only log pots I use require toilet paper aftwards

I actually have no idea what I am talking about, please someone just take mah monehhh and give me a link to something suitable

Yvan256 · « **Reply #263 on:** January 28, 2013, 07:28:29 pm »

http://en.wikipedia.org/wiki/Potentiometer#Logarithmic_potentiometer
"Logarithmic taper potentiometers are often used in connection with audio amplifiers as human perception of audio volume is logarithmic."

As for the value required, I can't really help since it's been too long since I played with these.

chopperthedog · « **Reply #264 on:** January 28, 2013, 07:41:27 pm »

If your build is using a power amp to power the speakers then the board is putting out a line level signal. Use the pot I linked above.

good day.

griffindodd · « **Reply #265 on:** January 28, 2013, 07:44:33 pm »

Nope the speakers are powered directly by the board

chopperthedog · « **Reply #266 on:** January 28, 2013, 07:48:14 pm »

Ahhhhh, so you were coming from board -> pot -> speakers? If that's the case a volume pad is what you're after. Or a circuit that can vary the voltage of an amplified signal.

Didn't dig very far. But something of this nature like the L-PAD-8SH http://www.jwd.com/speaker_volume_controls2.htm is what you're after. It would help to know the specs of the wattage output of the board.

Or, is there a trim pot on the board itself? If yes figure out the rating, de solder it from the board and wire in a new remote pot.

good day.

TopJimmyCooks · « **Reply #267 on:** January 28, 2013, 09:41:24 pm »

for them's that don't pot a log so regular any more these days, - just ask for audio taper. That's plain english for logarithmic. Yup. Good jnob Jorb!

yotsuya · « **Reply #268 on:** January 29, 2013, 12:41:54 am »

I got a couple at Radio Shack, Griff. They work great.

griffindodd · « **Reply #269 on:** January 29, 2013, 01:15:44 pm »

Ok got it on logarithmic, but still I'm confused on what K to get. The 5k standard pot I got was too strong knocking out the volume in less than an 8th of a turn, so do I need a different value or does a 5k log work differently. This all sounds like a bunch of beeps and clicks to me, like I've always said, I'm a designer not an engineer Jim.

yotsuya · « **Reply #270 on:** January 29, 2013, 01:56:45 pm »

http://www.radioshack.com/product/index.jsp?productId=2062359

griffindodd · « **Reply #271 on:** January 29, 2013, 02:06:23 pm »

Thanks! I'll grab one on the way home from my local RS

griffindodd · « **Reply #272 on:** January 29, 2013, 05:17:59 pm »

So did anyone else start building one of these? Just wondering how their experience was with the plans, fitting etc>? I would be cool to see one built for a different theme

jmike · « **Reply #273 on:** January 29, 2013, 06:32:42 pm »

Quote from: griffindodd on January 29, 2013, 05:17:59 pm

So did anyone else start building one of these? Just wondering how their experience was with the plans, fitting etc>? I would be cool to see one built for a different theme

Hey Griff this looks great, hopefully you figure that out soon.
As for building one, yeah it's definitely one of my future projects.
I actually started purchasing some of the parts. One question how did you wire the power supply? I got mine from GGG and I'm not sure which are the positives that connect to the outlet.

BobA · « **Reply #274 on:** January 30, 2013, 07:58:35 am »

The pot you are using is adding too much resistance with a very small turn of the pot. Since you are varying the output of an amp and speakers are 4 to 8 ohms you need much less resistance. A 1k pot or 500 ohm with an audio taper will probably work but the pads give much better control as they have alot less resistance and are made to be put inline with a speaker.

griffindodd · « **Reply #275 on:** January 30, 2013, 11:34:28 am »

Quote from: jmike on January 29, 2013, 06:32:42 pm

looks great, hopefully you figure that out soon.
As for building one, yeah it's definitely one of my future projects.
I actually started purchasing some of the parts. One question how did you wire the power supply? I got mine from GGG and I'm not sure which are the positives that connect to the outlet.

Cool JmIke, can't wait to see yours. As for the power supply I took the expert approach and tried to google pics of one wired up, then copied it, flicked the switch and checked for burning smells or banging noises......yeah I'm a pro.

griffindodd · « **Reply #276 on:** January 30, 2013, 11:42:14 am »

Quote from: BobA on January 30, 2013, 07:58:35 am

the pads give much better control as they have alot less resistance and are made to be put inline with a speaker.

But what/where are these mystical pads you speak of? Can mere mortals buy them? Linky? At this point I'm almost ready just to buy a mini amp from somewhere like the Amazon and be done with it.

http://www.amazon.com/LP-2020A-Lepai-Tripath-Class-T-Amplifier/dp/B0049P6OTI/ref=sr_1_1?ie=UTF8&qid=1359564063&sr=8-1&keywords=mini+amplifier

griffindodd · « **Reply #277 on:** January 30, 2013, 12:38:21 pm »

I decided to buy that amp I linked above, mainly because I am lazy but also because I am lazy

BobA · « **Reply #278 on:** January 30, 2013, 05:28:41 pm »

Ok on the amp. Here is info on audio attenuator pads in case anyone is looking for the info in the future. You can buy the adjustable pads constructed for stereo at RShack and Audio stores.
http://www.uneeda-audio.com/pads/

griffindodd · « **Reply #279 on:** February 03, 2013, 06:29:37 pm »

Hi guys. Busy weekend but I found an hour to work on the volume control.

Got the amp from Amazon for $19.

Opened up and removed the pot from the main board

Rewired and extended

Fixed in place

Shaved down the original knob from the amp and it actually looks good with the chrome edged existing buttons.

And while I had the tools out I fefurbed the wifes beach cruiser with replacement seat wheels and bars and popped on a ride along seat for our little girl. Perfect for lazy Sundays by the lake.

Sent from my pocket ZX81


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Author Topic: Little Ms. Pac-Man, A Portable Cocktail Cab (Read 107220 times)

Nephasth